@MrsRMG
Are you using an on-premise user?
Because Microsoft just literally screwed me over with the following message:
"Microsoft is committed to transparency regarding incidents that affect our customers. As part of this commitment, we’re writing to inform you that a recent misconfiguration inadvertently resulted in the unsupported ability of your users to access Microsoft To Do within your on-premises environment, including Tasks within Teams. This access is unsupported for tenants with on-premises accounts and can cause permanent data loss of To Do lists after performing a migration to Exchange Online mailbox. In efforts to prevent any actual data loss and to mitigate the impact we’ve changed access of Microsoft To Do into a read-only state for your organization on Friday, January 22, 2021 that will last until February 22, 2021. After February 22, 2021, your users will no longer have access to Microsoft To Do, or Teams Tasks permanently as this feature was not intended for use in on-premises environments. During that time, you will need to take the steps outlined below to preserve your data."
You can imagine how happy I am right now, we recently began educating our users about using Teams the correct way and they just started using the Tasks application within their Teams.
So much joy!
